Disclosing up front, I've been storm chasing for about 10 years, so this is my perspective.
The film is not perfect by any stretch. It has some actual, authentic storm footage, but it's mixed in with low quality effects and blurry scenes. Many shots are filmed in wide angle and the perspective is all distorted. (Sorry, the photographer in me was cringing)
I digress. The plot had moments of suspense and drama, but it was way too jumpy. Plenty of Easter eggs for storm chasers, but a lot of that will go over the head of the casual viewer.
It would have been nice if they took a little bit of time of clearly outline what a "supercell" actually is. Sure, I know what one is, but it would help the viewer understand better. You see lots of radar clips, but with little to no explanation at all. Dramatic music is also thrown in all over, but it doesn't always fit with the flow of the movie.
Unfortunately, there were also many errors, in terms of meteorology, storm evolution/continuity and with geography. At one point, there are interstate signs visible from the wrong state. Unless you're a storm chaser or travel often across the Plains, it's really hard to follow where they are and what they are talking about much of the time.
Overall, it seems best watched in a group. Go into it accepting that it's not a perfect cinematic masterpiece. It's dramatized for Hollywood. If you can look past some of the flaws, you will probably enjoy it. If you're expecting an award winning film with epic tornado footage, then you'll be disappointed.
I give it a 5/10, trying to not let the storm chaser in me skew my perspective.
